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Finding the Third Proportional to 176,390 and 387,898

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Solution

The third proportional to 176,390 and 387,898 is: 853,023.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,390 : 387,898 = 387,898 : x
  2. Step 2: Convert to fraction form
    176,390/387,898 = 387,898/x
  3. Step 3: Cross multiply
    176,390x = 387,898 × 387,898
  4. Step 4: Simplify right side
    176,390x = 150,464,858,404
  5. Step 5: Solve for x
    x = 150,464,858,404/176,390
  6. Step 6: Final answer
    x = 853,023.75

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.